Among the stars of ZooBorns are Hasani, the bemused-looking western lowland gorilla, some fluffy tawny frogmouth chicks and a wrinkly, pink aardvark.

Getting a headache yet?

Most of the animals made their debuts on the ZooBorns website.

And, not surprisingly, those with fur or feathers tend to outnumber creatures with scales or more than four legs.

‘We don’t do a lot of insect larvae or spiders,’ said Mr Bleiman. ‘Some organisms are too unpleasant to put on the site. A tiny fraction of the population would pine after a baby spider.’

There is, however, a serious side to ZooBorns, which donates some of its money to animal protection projects. Co-author Chris Eastland said: ‘It’s hard to engage people in the conservation side but it is our biggest message – and we try to deliver it through adorableness.’